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Towards antenna miniaturization at radio frequencies using plasma discharges

Laquerbe, Vincent and Pascaud, Romain and Laffont, Adrien and Callegari, Thierry and Liard, Laurent and Pascal, Olivier Towards antenna miniaturization at radio frequencies using plasma discharges. (2019) Physics of Plasmas, 26 (3). 1-5. ISSN 1070-664X

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Official URL: https://doi.org/10.1063/1.5087070


An original electrically small antenna concept relying on plasma discharges is presented in this paper. It consists of a small coaxial probe placed above a ground plane and surrounded by a hemispherical inductively coupled plasma discharge. This plasma discharge behaves as a subwavelength epsilon-negative resonator exhibiting a localized surface plasmon resonance at microwave frequencies with significant radiation efficiency. Measurements show that the plasma allows impedance matching of the radiating element and frequency agility from 310 to 390 MHz by controlling the power delivered to the discharge. Meanwhile, significant radiation enhancement up to 20 dB at 300 MHz is measured. The existence of the localized surface plasmon resonance is finally confirmed by a Mie analysis considering the measured plasma characteristics.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Direction Générale pour l'Armement - DGA (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:22 Mar 2019 13:31

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